What sort of reuse options were explored? Why couldn’t they work?

Bungee jumping over Barangaroo, a viewing tower offering sweeping panoramas over Sydney Harbour, a “pop-out” platform and café, and a base for abseiling were among the alternative uses that were floated for the Harbour Control Tower. However, for various reasons, the building was not appropriate for such activities. The Barangaroo Delivery Authority investigated alternative usage but concluded that the significant access, structural and liability issues identified precluded any retention and reuse options. Plus, experienced commercial leisure operators approached to gauge interest in a leisure/adventure use of the tower advised that they had no interest in pursuing the opportunity, given the physical limitations of the existing tower and the prohibitive costs of modification.